I've got an old PaceShip PY26 with a Yanmar
YSE12 that i bought late in the season last year as an experience building boat and boy what an experience so far. It's my first keel
boat and the motor
has never failed me and all in all it sails
great, just needs a fair amount of TLC.
So i'm on to the wiring
now. had a diesel mechanic
do a tuneup on it and he says the motor
is in great shape except for the wiring
. seems like one of the previous owners did some DIY wiring so it's kinda messy but the biggest concerns are the Alternator
does not seem to be charging
at full potential, but i've never had a dead battery
, and there is no wire between the alternator
and starter which the mechanic
says there usually should be.
Also the warning lights don't seem to work, for example the Charge light should come one (exciter?) before starting but does not. Bulb is good because mechanic jumped it and it light up but he said it was backwards. unfortunately i forget if he said he jumped it to positive when it should be negative or visa versa.
It's also got, what i believe to be, and aftermarket Instrument panel with Oil
pressure, Engine Water
Temp, and Ammeter but i don't believe the oil
pressure gauge will ever work because the sending unit is a switch and not a meant for a gauge. not sure if the water
temp gauge is the same or not but there is no warning light for water temp.
So i spent a cold rainy sunday afternoon documenting the wiring and comparing it to the manual which has a very basic wiring diagram and it seems like there is a Blue wire that i believe was at some point connected to the starter solenoid but it's been cut at the both ends and no diagram actually shows where it goes. the starter side is cut right at the cable harness wrap and it then runs to the 6 pin connector which should connect it to the control panel
but it's been removed entirely from the other side of the connector.
There is however a DIY red wire running from the starter to the Ammeter so i am wondering if this is possibly the replacement for the missing blue cable. Also the Blue wire from alternator A to Regulator
A has a DIY red wire spliced in that also runs to the Ammeter. so i'm confused.
I have recently purchased Don Casey's sailboat electronics
simplified and trying to compare the "alternator terminal designations" with my own. I have a E (Ground black wire), F (Field red/white wire), But is my N (light brown wire) for the tachometer which i don't have, And whats my A (blue wire between Alternator and Regulator) ? One of them has to be my Sense and the other my output??
I can't see any model numbers on the alternator and i have not yet tested to see if this is a P or N type, anyone know?
I have attached the basic wiring diagram from the manual and my 'work in progress' wiring diagram. anyone that can give me an opinion i would love to hear it.